田骁,赵洪运,宋晓国,韩桂海,冯吉才.Ti-28Ni钎料真空钎焊TZM合金接头界面组织与力学性能[J].稀有金属材料与工程,2018,47(3):927~931.[Tian Xiao,Zhao Hongyun,Song Xiaoguo,Han Guihai,Feng Jicai.Interfacial Microstructure and Properties of TZM Alloy Joints Brazed Using Ti-28Ni Filler Metal[J].Rare Metal Materials and Engineering,2018,47(3):927~931.]
Ti-28Ni钎料真空钎焊TZM合金接头界面组织与力学性能
投稿时间:2016-03-01  修订日期:2016-04-15
中文关键词:  TZM合金  真空钎焊  界面组织  力学性能
基金项目:国家科技重大专项资助(项目号2014ZX04001131),国家自然科学基金资助(项目号51405099)
中文摘要:
      在钎焊温度为1040 ℃时,采用Ti-28Ni(质量分数,%)钎料实现了TZM合金的真空钎焊连接。采用SEM、EDS等方法分析了接头界面的微观组织结构,并研究了保温时间对TZM合金接头界面结构和性能的影响规律。结果表明,接头的典型界面组织结构为:TZM/Tiss/δ-Ti2Ni/Tiss/TZM;随保温时间的延长,焊缝宽度逐渐变小,其中连续的Tiss层厚度基本无变化,中间的δ-Ti2Ni层厚度有所降低;同时,TZM母材向焊缝中的溶解量增加。保温时间较短时,焊缝中残留有未溶解的TZM块,延长保温时间使母材溶解更充分。当保温时间为10 min时,接头平均抗剪强度最高为92.6 MPa,断裂发生于δ-Ti2Ni层,为脆性沿晶断裂。
Interfacial Microstructure and Properties of TZM Alloy Joints Brazed Using Ti-28Ni Filler Metal
英文关键词:TZM alloy  Vacuum brazing  Interfacial microstructure  Mechanical property
英文摘要:
      TZM alloy was successfully brazed using Ti-28Ni as filler metal at 1040℃. The effect of holding time on interfacial microstructure and mechanical properties of brazed joints was studied and the typical microstructure of joint was detected using SEM, EDS. As a result, the typical interfacial microstructure was: TZM/Tiss/δ-Ti2Ni/Tiss/TZM. As increased the holding time, the width of the braze seam decreased, the continuous width of Tiss basically did not change, and the width of central δ-Ti2Ni layer decreased to some extent. Meanwhile, the diffusion of TZM into base materials enhanced. When the holding time was relatively short, there was undissolved TZM block in the weld joints, and the base metal could dissolve thoroughly while extending the holding time. The highest average shear strength of 92.6 MPa was achieved when the holding time was 10 min, and the fracture happened at δ-Ti2Ni layer, which was intergranular brittle fracture.
作者单位E-mail
田骁 哈尔滨工业大学 646073382@qq.com 
赵洪运 哈尔滨工业大学  
宋晓国 哈尔滨工业大学 songxg@hitwh.edu.cn 
韩桂海 哈尔滨工业大学  
冯吉才 哈尔滨工业大学  
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